Polish "Use Kafka's StreamsBuilderFactoryBeanConfigurer"

See gh-46675

Author: snicoll

documentation/spring-boot-docs/src/docs/antora/modules/reference/pages/messaging/kafka.adoc

@@ -74,7 +74,8 @@ include-code::MyKafkaStreamsConfiguration[]
 By default, the streams managed by the javadoc:org.apache.kafka.streams.StreamsBuilder[] object are started automatically.
 You can customize this behavior using the configprop:spring.kafka.streams.auto-startup[] property.
 
-TIP: For advanced configuration, the arbitrary javadoc:org.springframework.kafka.config.StreamsBuilderFactoryBeanConfigurer[] beans can be registered to configure the javadoc:org.springframework.kafka.config.StreamsBuilderFactoryBean[] bean before the javadoc:org.apache.kafka.streams.StreamsBuilder[] bean is initialized.
+TIP: You can also register an arbitrary number of beans that implement javadoc:org.springframework.kafka.config.StreamsBuilderFactoryBeanConfigurer[] for more advanced customizations.
+
 
 
 [[messaging.kafka.additional-properties]]

module/spring-boot-kafka/src/main/java/org/springframework/boot/kafka/autoconfigure/KafkaStreamsAnnotationDrivenConfiguration.java

@@ -87,12 +87,11 @@ private void applyKafkaConnectionDetailsForStreams(Map<String, Object> propertie
 		KafkaAutoConfiguration.applySslBundle(properties, streams.getSslBundle());
 	}
 
-	private static final class KafkaPropertiesStreamsBuilderFactoryBeanConfigurer
-			implements StreamsBuilderFactoryBeanConfigurer {
+	static class KafkaPropertiesStreamsBuilderFactoryBeanConfigurer implements StreamsBuilderFactoryBeanConfigurer {
 
 		private final KafkaProperties properties;
 
-		private KafkaPropertiesStreamsBuilderFactoryBeanConfigurer(KafkaProperties properties) {
+		KafkaPropertiesStreamsBuilderFactoryBeanConfigurer(KafkaProperties properties) {
 			this.properties = properties;
 		}